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Finding the Fourth Proportional to 7,080.72, 9,772.60 and 4,096.64

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Solution

The fourth proportional to 7,080.72, 9,772.60 and 4,096.64 is: 5,654.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.72 : 9,772.60 = 4,096.64 : x
  2. Step 2: Convert to fraction form
    7,080.72/9,772.60 = 4,096.64/x
  3. Step 3: Cross multiply
    7,080.72x = 9,772.60 × 4,096.64
  4. Step 4: Simplify right side
    7,080.72x = 40,034,824.06
  5. Step 5: Solve for x
    x = 40,034,824.06/7,080.72
  6. Step 6: Final answer
    x = 5,654.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.